1 | // SPDX-License-Identifier: GPL-2.0-only |
2 | /* |
3 | * Copyright 2008-2010 Cisco Systems, Inc. All rights reserved. |
4 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. |
5 | */ |
6 | |
7 | #include <linux/kernel.h> |
8 | #include <linux/errno.h> |
9 | #include <linux/types.h> |
10 | #include <linux/pci.h> |
11 | #include <linux/delay.h> |
12 | |
13 | #include "vnic_dev.h" |
14 | #include "vnic_intr.h" |
15 | #include "enic.h" |
16 | |
17 | void vnic_intr_free(struct vnic_intr *intr) |
18 | { |
19 | intr->ctrl = NULL; |
20 | } |
21 | |
22 | int vnic_intr_alloc(struct vnic_dev *vdev, struct vnic_intr *intr, |
23 | unsigned int index) |
24 | { |
25 | intr->index = index; |
26 | intr->vdev = vdev; |
27 | |
28 | intr->ctrl = vnic_dev_get_res(vdev, type: RES_TYPE_INTR_CTRL, index); |
29 | if (!intr->ctrl) { |
30 | vdev_err(vdev, "Failed to hook INTR[%d].ctrl resource\n" , |
31 | index); |
32 | return -EINVAL; |
33 | } |
34 | |
35 | return 0; |
36 | } |
37 | |
38 | void vnic_intr_init(struct vnic_intr *intr, u32 coalescing_timer, |
39 | unsigned int coalescing_type, unsigned int mask_on_assertion) |
40 | { |
41 | vnic_intr_coalescing_timer_set(intr, coalescing_timer); |
42 | iowrite32(coalescing_type, &intr->ctrl->coalescing_type); |
43 | iowrite32(mask_on_assertion, &intr->ctrl->mask_on_assertion); |
44 | iowrite32(0, &intr->ctrl->int_credits); |
45 | } |
46 | |
47 | void vnic_intr_coalescing_timer_set(struct vnic_intr *intr, |
48 | u32 coalescing_timer) |
49 | { |
50 | iowrite32(vnic_dev_intr_coal_timer_usec_to_hw(vdev: intr->vdev, |
51 | usec: coalescing_timer), &intr->ctrl->coalescing_timer); |
52 | } |
53 | |
54 | void vnic_intr_clean(struct vnic_intr *intr) |
55 | { |
56 | iowrite32(0, &intr->ctrl->int_credits); |
57 | } |
58 | |